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MILWAUKEE M18 BMT-421C compact cordless multitool in HD box (4.0Ah battery + 2.0Ah battery + charger) - 4933446210

MILWAUKEE
Supplier number: MILWAUKEE 4933446210 | EAN 4002395004911

Variant

MILWAUKEE M18 BMT-0 compact cordless multitool in box (without battery and charger) - 4933446203 MILWAUKEE M18 BMT-0 compact cordless multitool in box (without battery and charger) - 4933446203 MILWAUKEE M18 BMT-0X compact cordless multitool in HD Box (without battery and charger) - 4933459572 MILWAUKEE M18 BMT-0X compact cordless multitool in HD Box (without battery and charger) - 4933459572 MILWAUKEE M18 BMT-421C compact cordless multitool in HD box (4.0Ah battery + 2.0Ah battery + charger) - 4933446210 MILWAUKEE M18 BMT-421C compact cordless multitool in HD box (4.0Ah battery + 2.0Ah battery + charger) - 4933446210
Recommended Retail Price €489.29
393.26 tax incl.
€325.01 excl. VAT (incl. all environmental contributions)
On stock - immediately available | we have 2 products in stock.

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Exclusive at Klium: Milwaukee Buy More, Get More 2026 - Get a FREE Milwaukee gift!

Buy at least €250 excl. VAT worth of Milwaukee products during the promotional period and, depending on your total order value, receive a FREE Milwaukee screwdriver set, cordless random orbital sander or cordless angle grinder.

How does it work?

  • Buy Milwaukee products with a total order value of at least €250 excl. VAT.
  • For a total order value of €250 excl. VAT up to but excluding €500 excl. VAT, you receive a FREE Milwaukee 12-piece Tri-Lobe screwdriver set (4932472003) worth €55.90.
  • For a total order value of €500 excl. VAT up to but excluding €750 excl. VAT, you receive a FREE Milwaukee M18 125 mm Random Orbital Sander cordless random orbital sander (4933464228) worth €168.90.
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  • The free item is automatically added to your order. No registration is required.
  • This promotion cannot be combined with the ongoing Milwaukee Cashback Promotion on Milwaukee hand tools. An invoice for which you receive a free Buy More, Get More gift therefore cannot also be submitted for the Milwaukee hand tools cashback promotion.
  • The promotion is valid from 01.10.2026 to 31.10.2026.
  • Milwaukee Buy More, Get More deals are recognisable by the promotion label on the product page. Click the label to view all available deals.

Versatile cutting and sanding with Milwaukee

Practical benefits
  • Quick tool-free blade changes: The FIXTEC system lets you swap blades and accessories in seconds without extra tools, keeping your workflow moving smoothly.
  • Precise variable speed control: Match the output to your material with 12 speed settings delivering between 12000 and 18000 oscillations per minute.
  • Integrated bright work light: The built-in LED illuminates your cutting line directly so you can work accurately even in dark or tight spaces.

In a nutshell

The right choise for

With the Milwaukee M18 BMT-421C cordless multi-tool, you cut and sand effortlessly in tight, hard-to-reach spaces. Whether making plunge cuts in skirting boards or sanding profiles, 12 variable speed settings and 12000 to 18000 oscillations per minute give you precise control across all materials. The fixtec system allows fast, tool-free accessory changes. Built-in led lighting brightens dark corners, while the dust extraction assembly keeps your workspace clean. Supplied with a 4.0Ah battery, a 2.0Ah battery, charger, and carry case, you keep working without interruptions.

Recommended Combinations
With Milwaukee M18 5 Ah Battery
With Milwaukee M18 5 Ah Battery and Charger
milwaukee_4933446210
MILWAUKEE M18 BMT-421C... x 1
393.26
milwaukee_4932430483
MILWAUKEE M18 B5 Li-ion... x 1
86.27
Original Price (tax incl.): 479.53
You Save: -4.31
Bundle Price (tax incl.): 475.22


Product information Accessories FAQ
€393.26
In stock - tax incl.

Product information

Key features according to our expert

  • Battery voltage: 18 V
  • Capacity (battery): 2 Ah; 4 Ah
  • Tool holder type: OIS; Starlock; StarlockPlus
  • Oscillation angle: 3,4 °
  • Oscillation frequency: 12000 - 18000 /min.
  • Supplied in: Case
  • Type of system case: Not applicable
  • UN number: UN3481
  • Number of batteries included: 2
  • Product Range: Milwaukee M18

Supplied as standard

  • 1 x M18 B4
  • 1 x M18 B2 Battery packs
  • M12-18 C Charger
  • Supplied in: Kitbox
  • Blade
  • Sanding pad
  • UL blade adapter
  • Blade adapter
  • Clamp shaft
  • 5 x sanding paper,dust port assembly
  • Depth gauge
  • Blade guard

Product description

  • Unique cutting depth stop adaptor to prevent over-cutting in material
  • Productivity enhancing FIXTEC tool free blade change with universal blade change adaptor included to accept all competitor blades
  • 12 variable speed settings from 12,000 - 18,000 orbits per minute and 3.4° oscillation movement allows quick completion of professional applications into materials such as metal, wood and plastic
  • Up to 50% faster and versatile cordless solution for cutting and removal applications with corded performance
  • Unique dust extraction kit to keep the work space dust-free when connected to an AC or DC extraction system
  • Brightest LED workspace illumination
  • Premium 4-pole brushed motor, REDLITHIUM battery pack and REDLINK electronic delivering the needed power, run time and durability
  • Flexible battery system: works with all MILWAUKEE M18 batteries

All Features

Battery voltage
18 V
Capacity (battery)
2 Ah; 4 Ah
Tool holder type
OIS; Starlock; StarlockPlus
Oscillation angle
3,4 °
Oscillation frequency
12000 - 18000 /min.
Supplied in
Case
Type of system case
Not applicable
Un number
UN3481
Number of batteries included
2
Vibration level sanding, deviation (m/s²)
1.5
Vibration level sawing in wood (m/s²)
12.3
Vibration level sawing in wood, deviation (m/s²)
1.5
Sound power level (lwa(db(a))
90.8
Product range
Milwaukee M18
Sound power level, deviation (db(a))
3
Oscillating angle left/right (°)
1.7
Sound pressure level, deviation (db(a))
3
Sanding vibration level (m/s²)
3.6
Number of batteries supplied
2
Battery type
Li-ion
Voltage (v)
18
No load speed (rpm)
12,000 - 18,000
Battery capacity (ah) 2
1 x 2.0 + 1 x 4.0

Accessories

View more accessories (78)

Frequently asked questions about this product

Answered by specialists
Which batteries are included with the Milwaukee M18 BMT-421C?
You receive one 4.0Ah battery (M18 B4), one 2.0Ah battery (M18 B2), an M12-18 C charger, and a carry case.
What accessories fit on this multi-tool?
Thanks to the Fixtec system and included adapters, it is compatible with OIS, Starlock, and StarlockPlus accessories.
What is the oscillation speed of this tool?
The tool features 12 speed settings with an oscillation frequency ranging from 12000 to 18000 oscillations per minute.
Is this tool compatible with other Milwaukee M18 batteries?
Yes, the M18 BMT-421C works with all 18V batteries in the Milwaukee M18 platform.
Is a dust extraction kit included in the set?
Yes, a dust extraction assembly is included to connect the tool to an extraction vacuum system.
Questions about this product?

Our product specialists are happy to help with any questions about this range. Call, email or chat with us!

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0032 3 74 000 41 [email protected]

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